Question

9 4 23
75 67 17
32 28 31
15 ? 19

Answer 1

Answer:

5

Step-by-step explanation:

Given  

The given series can be written as

We have

1. 9 4 23 = 4 + (2 + 3) = 4 + 5 = 9

2. 75 67 17 = 67 + (1 + 7) = 67 + 8 = 75

3.   32  28  31 = 28 + (3 + 1) = 28 + 4 = 32

4. 15  ?  19 = ? + (1 + 9) = 10 + 5 = 15

So the missing number will be 5